Testing View-Models in AsyncRedux

View-models created by VmFactory can be tested in isolation without building widgets. Use Vm.createFrom() to instantiate the view-model directly, then verify properties and execute callbacks.

Creating a View-Model for Testing

Use Vm.createFrom() with a store and factory instance:

import 'package:flutter_test/flutter_test.dart';
import 'package:async_redux/async_redux.dart';

test('view-model has correct properties', () {
  var store = Store<AppState>(
    initialState: AppState(name: 'Mary', counter: 5),
  );

  var vm = Vm.createFrom(store, CounterFactory());